Article (Scientific journals)
Spirometric Variables Recorded after Lobeline Administration in Healthy Friesian and Belgian White and Blue Calves: Normal Values and Effects of Somatic Growth
Bureau, Fabrice; Uystepruyst, C. H.; Coghe, J. et al.
1999In Veterinary Journal, 157 (3), p. 302-308
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Keywords :
Spirometric variables; calves; somatic growth; normal values; lobeline
Abstract :
[en] The purposes of the present study were: (1) to develop original equations to predict spirometric variables (SV) in healthy Friesian and Belgian White and Blue (BWB) calves < 1 year of age; and (2) to determine the effects of somatic growth on SV. Sixty-seven Friesian and 500 BWB calves were investigated. For each calf, the following SV were calculated: (1) the average minute volume derived using all the ventilatory cycles recorded during the 15 s of maximal ventilatory changes induced by lobeline administration (0.25 mg/kg, i.v.) (15-s LMV); (2) the maximal tidal volume, the maximal peak expiratory flow and the maximal peak inspiratory flow recorded from single breaths after lobeline administration (MVTL, MPEFLand MPIFL, respectively); (3) the ventilatory reserve (VRL= 15-s LMV - VEr; VEr= minute volume at rest). Mass specific (s) values were also calculated. All SV changed linearly with somatic growth in both Friesian and BWB calves. Since the rise in SV was more related to body weight than the age of calves, equations for reference values of SV always had body weight as the only independent variable. In the youngest calves, s SV were lower in the BWB breed. In the oldest calves (i.e. 1 year of age), s MPEFLand s MPIFLremained small in BWB calves whereas s MVTL, s 15-s LMV and s VRLwere almost equal in both breeds. These results could be related to the lower resistance to respiratory disorders in BWB calves < 1 year of age than in Friesian calves < 1 year of age.
Disciplines :
Veterinary medicine & animal health
Author, co-author :
Bureau, Fabrice ;  Université de Liège - ULiège > Faculty of Veterinary Medicine > Laboratory of Functional Investigation
Uystepruyst, C. H.;  Université de Liège - ULiège > Faculty of Veterinary Medicine > Laboratory of Functional Investigation
Coghe, J.;  Université de Liège - ULiège > Faculty of Veterinary Medicine > Laboratory of Functional Investigation
Van de weerdt, ML;  Université de Liège - ULiège > Faculty of Veterinary Medicine > Laboratory of Functional Investigation
Lekeux, Pierre ;  Université de Liège - ULiège > Faculty of Veterinary Medicine > Laboratory of Functional Investigation
Language :
English
Title :
Spirometric Variables Recorded after Lobeline Administration in Healthy Friesian and Belgian White and Blue Calves: Normal Values and Effects of Somatic Growth
Publication date :
1999
Journal title :
Veterinary Journal
ISSN :
1090-0233
eISSN :
1532-2971
Publisher :
Elsevier, London, United Kingdom
Volume :
157
Issue :
3
Pages :
302-308
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 09 March 2009

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